Results 91 to 100 of about 274 (142)

Advances in Genetic Breeding of Rice with High Resistant Starch [PDF]

open access: yes
As a new type of dietary fiber, resistant starch can control blood sugar and cholesterol levels and improve intestinal health, and has become a research hotspot in the fields of functional food and crop genetics in recent years. Rice is an important food
Aoqiu FU   +8 more
core   +1 more source

分蘖期土壤水分对早稻矿质养分吸收的影响

open access: yesShuitu Baochi Xuebao, 2005
在池栽条件下研究了不同水分处理对早稻吸收氮磷钾及分蘖生产效率的影响。结果表明:土壤水分对早稻吸收N、P、K矿质元素有明显影响。随着土壤水分含量的提高,植株对矿质元素的吸收量显著提高。在分蘖初期,65%水分处理的植株对N、P、K的吸收量分别只有100%的74.1%,43.9%和50.8%,而在分蘖后期,则分别只有100%的41.4%,18.6%和27.5%。早稻矿质元素的分蘖生产效率以在85%土壤含水量时最高,其N、P、K的平均分蘖生产效率分别比100%高35.7%,140%和81.8 ...
赵全志 高桐梅 宁慧峰 殷春渊 吕强
doaj  

Research Progress of ROS Homeostasis Regulation Genes Involved in Rice Anther Development [PDF]

open access: yes
The discovery of male sterile lines in rice laid a foundation for the successful use of heterosis in rice, greatly improved the yield per unit area of rice, and provided a strong guarantee for solving the problems of food security. As a male reproductive
Haohua HE   +6 more
core   +1 more source

密植减氮对三熟区不同肥力红壤稻田作物产量和耕层氮素的影响

open access: yesShuitu Baochi Xuebao, 2020
2017-2018年在长江中游三熟制区(江西进贤)开展油菜—早稻—晚稻3季作物田间试验,初步探究了油稻稻秸秆还田下密植减氮对不同肥力红壤稻田作物产量和耕层氮素的影响,为三熟制区资源节约型与环境友好型生产技术发展提供参考。结果表明:在油稻稻三熟秸秆还田条件下,提高土壤肥力和增加种植密度能够促进油菜及双季水稻群体生长,显著提高作物产量。增密30%、减氮20%的密植减氮处理,可以满足油稻稻3季作物生育期内的氮素需求,保证作物正常生长,并明显提高氮肥利用率。总体而言 ...
王芳东   +5 more
doaj  

Studies on genetic transformation of Oryza sativa L. by IPT Gene [PDF]

open access: yes, 2003
水稻(OryzasativaL.)是最重要的粮食作物之一。近年来,生物工程技术的兴起和发展为培育新型水稻品种提供了可能。本研究的目的是通过农杆菌介导的转化方法,将自我调控延缓叶片衰老系统应用于水稻良种:中花8号(粳稻)和佳禾早占(籼稻),一方面建立并优化农杆菌介导的中花8号、佳禾早占遗传转化体系,将外源抗衰老嵌合基因PSAG12-IPT转入这两个水稻品种中,并为其他有用基因的转入奠定基础;另一方面摸索中花8号和佳禾早占的分化和脱分化条件,并获得转PSAG12-IPT的抗衰老的水稻植株。主要结果如下 ...
林楠
core  

Evaluation of Seedling Blast Resistance and Identification of Resistance Genes in Rice Landraces from Three Bulang Minority Gathering Areas inYunnan [PDF]

open access: yes
【Objective】In order to determine the resistance characteristics and distribution of rice blast disease in rice landraces from Bulang minority in Yunnan.【Method】Seedling-stage resistance evaluation and molecular characterization were conducted on 78 rice ...
Chao DONG   +8 more
core   +1 more source

[Recent application advances of covalent organic frameworks for solid-phase extraction]. [PDF]

open access: yesSe Pu, 2023
Gao YY   +8 more
europepmc   +1 more source

秸秆还田对汉中盆地稻田土壤有机碳组分、碳储量及水稻产量的影响

open access: yesShuitu Baochi Xuebao, 2017
为探索稻麦或稻油轮作制下,小麦、油菜秸秆还田对汉中盆地稻田土壤碳库组分的变化,设置小麦秸秆不还田(WSN)、小麦秸秆常规还田(WS)、小麦秸秆促腐还田(WSM)、油菜秸秆不还田(RSN)、油菜秸秆常规还田(RS)、油菜秸秆促腐还田(RSM),共6个处理,通过大田试验研究了不同秸秆类型及还田方式对稻田0—5,5—10,10—15,15—20,20—25 cm 5个土壤层次中的土壤容重、总有机碳(TOC)、活性有机碳(LOC)、活性有机碳效率(ACL)、碳储量(SCS)、碳库管理指数(CPMI ...
吴玉红   +8 more
doaj  

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